CATALYST SYSTEMS FOR AMMONIA OXIDATION

The flat knitting technology enables us to knit design patterns in both two and three dimensions.

The knitted structure is essentially relevant, since each catalyst gauze layer is exposed to variable operating conditions inside the catalytic converter. When passing through the catalyst gauze pack, the ammonia content in the process gas decreases, while the reaction temperature increases. In addition, other parameters like, the operating pressure, ammonia ratio, feed gas temperature, gauze or the process temperature and the loading of the catalyst vary considerably in the individual processes.

The structure of the catalyst gauze and its wire gauge determines the ammonia conversion, the gauze performance in terms of desired product selectivity, catalyst aging and the primary burn-off loss of the noble metals.

Our knitting technology allows us to optimize the design of the catalyst system for every unique plant process conditions of our customers.
Three-dimensional catalyst gauzes have the advantage of an alternating spatial arrangement of the wires and thus are characterized in a more homogeneous ammonia conversion behaviour as well as higher temperature resistance, while providing a uniform temperature gradient across the catalyst pack.